Popgun



Jane 20, 1944.

c. F. LEFEVER for em:

Filed April 24, 1943 2 Sheets-Sheet -1 A 'FIG.2.

INVENTOR. CHARLES F. LVEFEVERV FIG}.

ATTORNEYS June 20, 1944. I c. F. LEFEVER 2,351,823

POP 01m Filed April 24, 1943 Sheets-@Sheet 2 W, .7? if I 5 f 1*":

I I I I Q M e B7 V :2 w: v 5

:1 B F 7 ""9: I a B8 INVENTOR. CHARLES F. LEFE-VER BY I 5 1 ATTORNEYS.

Patented June 20, 1944 U TED STATES pins- T n F -E.

POPGUN Charles F. Lefever, Plymouth, Mieh;, assignor to DaisyManufacturing I Mich., a corporation of Michigan I Application April24,194's, Serial No. 484,411 H 6 Claims. (era's-1914 I I rear end thereofwith'aknob. ,I-If atits rear end.

The invention relates to .pop guns and has for its primary object theobtaining of -.a construction which can be manufactured at low cost andfrom materials which are available for this pur pose during the presentnational emergency. To this end the invention consists in theconstruction as hereinafter. set forth.. I

:Inthe drawings: Fig. 1 is a perspective view of my improved pop Fig. 2is a longitudinal section through the barrel-ofthegun; I i

' Fig. 3 is a section .on line 31-3, Fig.2;

.4 is across sectionon line 4- 4, Fig. 2;

vFig. 5 is a section-n line 5, Fig. 2;

vFig. 6 is a sectional elevation showing a-modifiedconstruction; and

'7 is a cross sectionon line"l 1, Fig. 6.

My improved pop gun is of that type in which the noise is produced bythe rupture of a paper strip subjected to air pressure. -Heret0fore gunsof this type have been -provided with various means for clamping thepaper in sea-ling contact with the air chamber. In thepresentconstruction I accomplish this by novel and simple meansdispensing with parts heretofore necessary. Also, the construction isone which may be made almost entirely from wood and from scrap stockwhich has little value for other purposes.

As illustrated, my improved :p'op gun is .in the form of a pistol havinga barrel A and handle B both preferably formed of wood. iThe barrelA isbored and counterbored from oppositerends to form .therewithin. .anannular, shoulder C'located a short distance in rear of the-forward end.It i is also cut away on opposite sides ,to form a slot D extendingtransversely therethrough adjacent to the shoulder Cfor-the passage of apaper strip E. Within the rear portion of the barrel is a sleeve memberF which has a bore F in its for- Company, 1 Plymouth,

The piston is secured by a screw G with metal washers. G andG within andin rear of the cup. The latter is adapted to engage theshoulder Ftolimit thewrearward movement of the piston.

' {Ifhe sleeve F is longitudinally movable withinthe ward portionconstituting an air chamber and a bore F of slightly smaller diameter inits rear portion with a shoulder F therebetween. The forward end of thesleeve is slightly tapered to form a narrow annular face F adapted inthe forward movement of the sleeve to press the paper strip against theshoulder C. The latter is provided with a gasket or facing C formed of aleather, rubber or other yielding material so that the paper will bepressed against the face F to seal the front end of the air chamber. Gis a piston within the bore F preferably formed of a cup of leather orother suitable material. This piston is secured to the forward end ofthe shank 0r rod H in the bore F extending out from the tending througha barrel .A which movement is limited by a pin or dowelI- extendinginward from one side of the barrel to engagea slot I in the sleeve. Theamount of movement permitted is suflicientfor the sleeve to; clear theslot D in its rearmost position and toepress against the gasket 0 in itsforward position. ,At one side of the barrel just in rear ofthe slot Disa magazine .J for holding arol-l of paper strip. This magazine has aslot J in its forward side through which the paper is drawn and thenpassed through the slot D. The handle B-is .mortised into the lower faceof the barrel as indicated at B and secured by glue. It is also providedwith an aperture B in the forward portion thereof to simulate a triggerguard. .'Wi;th the construction as-described, the friction between thecupped piston G and the sleeve Fissumcientto move the latter with theformer as .far as permitted by the slot ,1. Thus, assuming-that the rod.H has been drawn rearward and the ,pistomGyis in the position showninFig. 2, .thesleeve F will be in rear of the slot D so as to permitthepaper strip E to be drawn through said slot from themagazine J .Tofire the gun the handle B'is grasped.bytheright-hand of the operator whoalso inserts a finger through the apertureB asif he were pulling upon atrigger. {The knob H isthen. moved forward .;by the lefthand.andonaccount of the friction between the piston andsleeve will advancethe latter toclamp .thepaper stripE against the. gasket C The ,continuedforward movemehtof the :knobH and rod H will move the piston G withinthe bore F compressing the air therein until sufiiclent is attained torupture the a loud report.

In Figs. 6 and .7 a slightly modified construction is shown where thehandle has a portion B attached to the barrel and another portion Bexslot in the barrel and attached to the sleeve F. The latter portionhas a mortised sl0t B engaged by a tongue B on the portion B A pin Bextending through both members and engaging a slot 13 in the tongue Blimits the amount of movement permitted. With this construction theforward movement of the sleeve F to clamp the paper strip is effected bythe grasp of the handle and the rod H is only used for'opcrating thepiston to compress the air. However,

pressure paper. This will cause slotted for the passage of a paper striptherethrough, an annular seat or shoulder within said 2 barrel forwardof said slot, a sleeve movable within the rear portion of said barrelconstitut-vv ing an air chamber and adaptedwhen moved' forward to presssaid paper strip against said seat;

sealing the forward end of said air chamber, a piston within said airchamber and a piston rod for actuating the same extending out from the;

rear end of said sleeve and barrel, adapted when moved forward tocompress the air within said chamber and rupture the strip. l

' 2. A pop gun comprising a' barrel transversely slotted for the passageof a paper strip there through, an annular seator shoulder within saidbarrel forward of said slot, a sleeve -'movable within the rear portionof said barrel into and out of contact'with'said paper strip and seat,the forward portion of said sleeve constituting an air chamber, apistonin said air'chamber, an actuating rod for said piston-extending rearwardbeyond said sleeveand barrel, a knob at the'rear end' of said rod, andmeans operating in advance of the forward movement of said piston underactuation of said knob and rod for pressing said sleeve against saidp'aper strip and seat to-seal the forward end of said'air chamber,whereby the forward movement of said piston in said chamber willcompress the air therein and rupture said paper strip; 1 l

- 3. A pop gun comprising abarrel transversely slotted for the-passageof a paper strip therethrough, an annular seat or shoulder within saidbarrel forward of said slot, a sleeve movable within the rear portion ofsaid barrel into and out of contact with said paper strip and seat,the-forward portion of said sleeve constituting an air chamber, 'apiston in said air chambergan actuatingrod for said piston extendingrearward beyondsaid sleeve and'barrel, a knob at the rear end ofsaidrod, means operating in advance of the forward movement of saidpiston'under ac tuation of said knob and rod-for pressing said sleeveagainst said paper strip and seat to seal the forward end of said airchamber; whereby the forward movement -of--said piston in said chamberwill compress the air therein and rupture said-paper strip, and amagazine attached to said barrel on one side thereof for holding a rollof said paper strip.

4. A pop gun comprising a barrel transversely slotted for the passage ofa paper strip therethrough, an annular seat or shoulder within saidbarrel forward of said slot, a sleeve movable within the rear portion ofsaid barrel into and out of contact with saidpaper. strip and seat, theforward portion of said sleeve constituting an air chamber, a piston insaid air chamber, an actuating rod for said piston extending rearwardbeyond said sleeve and barrel, a knob at the rear end of said rod, meansoperating in advance of the forward movement of said piston underacftuation of said knoband rod for pressing said sleeve against saidpaper strip and seat to seal the forward end of said air chamber,whereby 7' the forward movement of said piston in said chamber willcompress the air therein and rupture said paper strip, and a magazineattached to said barrel on one side thereof for holding a roll of saidpaper strip, said magazine having a cylindrical recess open at the topfor the :insertionof said roll and a slot inits side through which thestrip is drawn into the slot through said barrel;

'5 A pop gun comprising a barrel forming/an air chamber and transverselyslotted'for the passage of a paper strip therethrough, an annular seator shoulder within said barrelforward'of said slot, a sleeve movablewithin the rear por-' tion of said barrel, means forlimiting-themo'vement of said sleeve within said barrel, a pist'onwithin said air chamber frictionally engaging said sleeve, and a rodextending rearwardsfrom said piston beyond the rear endof saidsleeve andbarrel, whereby the forwardmovei'nent of said rod will first move saidsleeve into' jsealing contact with said'strip and will then compress theair in said chamber to rupture the strip.

6. A pop gun comprising a barrel transversely slotted for the passage ofa paper strip' therethrough, an annular seator shoulder within'saidbarrel forward of said slot, 2. sleevewithin the rear portion of saidbarrel movable therein into and out of contact with said paper strip andseat,- said sleeve constituting an. air chamber, a handle having aportion secured to' 'said barrel and another portion secured to saidsleevawhereby the-relativemovement of said portions when grasped 'bythehand of the operator -w'illpress said sleeve into sealing contact withsaid strip and seat, a piston within said airflch'amber, and a piston.rod extending rearward from'said'pis tonand beyond the rear end of saidsleeve and barrel whereby the forward movement 'of fsaid piston willcompress the air Within-said chamber and rupture said strip. f f aCHARLES F. LEEE lYlilR,

